Переносимость, точность

Компиляторы

FORTRAN

Sun Studio Compilers and Tools
Sun Studio Compilers and Tools for Linux and Solaris OS on Sparc and x86/x64 platforms includes command line tools as well as a NetBeans-based IDE for developing, compiling and debugging C, C++ and Fortran programs. It also includes performance analysis tools.

G95
G95 is an open source Fortran 95 compiler. At the time this was written, most of the ISO Fortran 95 standard has been implemented. Platforms supported include Linux(x86, Intel IA64, AMD x86_64), Windows, Macintosh OS X, FreeBSD, Sparc Solaris and HP-UX.

Gfortran
gfortran is a Fortran 95 compiler. It runs on Linux and Windows.

Salford FTN95 Fortran 95 Compiler
Salford FTN95 is a Fortran 95 compiler that supports Fortran 77, Fortran 90 and Fortran 95. The compiler generates exectuables for Win32 (but Win32 console and GUI applications) and the Microsoft .NET framework. It comes with CHECKMATE, a tool that lets programmers check the correctness of their code at runtime. Also included is Plato 3 (an IDE), full source level debugging, documentation and examples. You may only generate code for your personal use on your home computer, and all executables will display a banner on execution.

Salford FTN77 PE ANSI Fortran 77 Compiler
The Salford FTN77 PE (Personal Edition) comes with a full optimising ANSI Fortran 77 compiler with support for various common extensions (including MIL-STD-1753), linker, libraries, make utility, librarian and a full screen debugger. The compiler has a built-in assembler for inline assembly, and the ability to link with code from other sources (such as C++ Fortran 90 and Fortran 95 code). It is free for personal use and for use by students. It supports Windows 95, 98 and NT.

Open Source Watcom / OpenWatcom Fortran Compiler
The Watcom (now OpenWatcom) Fortran 77 compiler is now available free of charge, complete with source code. This compiler, which generates code for Win32, Windows 3.1 (Win16), OS/2, Netware, MSDOS (16 and 32 bit), etc, was a well-known compiler some years back (until Sybase terminated it).

MinGW’S G77 (GNU Fortran)
This system comes with the GNU G77 Fortran compiler (among other things, including a C/C++ compiler), which you can use to generate Win32 executables from F77 code. Like many systems based on the GNU tools, Mingw32 comes with complete with various programming tools, such as a program maintainence program (ie, make), text processing tools (sed, grep), lexical analyser generator (flex), parser generator (bison), etc.

DJGPP GNU G77 (Fortran 77) for MSDOS
This is a development system based on the well-known GNU compiler system that includes compilers for Fortran 77, C, C++, Objective C, etc. It generates 32 bit MSDOS executables that is Windows 95 long-filename-aware. It is a very complete system with IDEs, graphics libraries, lexical analyser generators (flex), parser generators (bison), text processing utilities (like grep, sed), a program maintainence utility (ie, make), a dos extender, and so on. The compiler, utilities and libraries come with source code.

F2C — Fortran to C Translator
This is a well-known Fortran to C converter that comes with source code. The site also includes pre-compiled binaries (executables) for MSDOS and Microsoft Windows, although these are by no means the only systems supported — the compiler works on Unix systems like BSD, Linux, etc. You have to compile the compiler yourself on those systems. Libraries containing the runtime support needed (together with the C source code) are also included. You need a C compiler to generate binaries from your Fortran sources.

Emx/Rsx G77 (GNU Fortran)
This is another GNU Fortran port. The RSX port compiles DOS extended console applications for Win32 and the EMX port generates MSDOS extended applications as well as OS/2 applications. The compiler supports the Fortran 77 syntax.

Lcc-Win32 Fortran Compiler
LCC-Win32 is primarily a free C compiler and its programming environment for Win32, but it also appears to have a Fortran compiler available for download from their website. It apparently compiles Fortran 77 code (with some common extensions) to C which is subsequently compiled by the C compiler to generate a Win32 native executable. The entire process is integrated seamlessly into the IDE so you might not even realise that intemediate C files were being generated (they are deleted automatically when they are no longer needed). The IDE supports syntax highlighting in C and Fortran.

Compaq Fortran for Linux Alpha
This Fortran compiler is for Linux Alpha systems only. It implements the full Fortran-95 language as well as a few language extensions. It comes with a debugger (ladebug), an extended maths library (the Compaq Extended Math Library, CXML) containing technical and scientific subroutines. The licence for the free version allows it to be used for personal and educational purposes, and prohibits its use in any commercial venture.